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Re: Centrifugal force

On Tue, 18 Nov 2003, Rick Tarara wrote:

I'm not up on my General Relativity ...
Doesn't the gravitational force also supposedly propagate (through
gravitons) at c?


Leaving aside the issue of gravitons, in modern general
relativity there is no gravitational force which propagates
through space and time. Gravitation is considered to be a
manifestation of spacetime curvature -- general relativity is a
geometric theory. However, to answer your question, in general
relativity _finite changes in the gravitational field_ propagate
at c. See, for instance,

R.J. Low, "Speed limits in general relativity," _Classical and
Quantum Gravity_, 16 (2): pp. 543-549, Feb 1999.

--
Stephen
stephen@speicher.com

Ignorance is just a placeholder for knowledge.

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